28065357750 has 32 divisors (see below), whose sum is σ = 70051134816. Its totient is φ = 7484095200.

The previous prime is 28065357743. The next prime is 28065357769. The reversal of 28065357750 is 5775356082.

It is a self number, because there is not a number n which added to its sum of digits gives 28065357750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18709489 + ... + 18710988.

It is an arithmetic number, because the mean of its divisors is an integer number (2189097963).

Almost surely, 2^28065357750 is an apocalyptic number.

28065357750 is an abundant number, since it is smaller than the sum of its proper divisors (41985777066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28065357750 is a wasteful number, since it uses less digits than its factorization.

28065357750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37420497 (or 37420487 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 28065357750 in words is "twenty-eight billion, sixty-five million, three hundred fifty-seven thousand, seven hundred fifty".